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±Þ¼º ÇϺÎÈ£Èí±â °¨¿°Àº ¾î¸± ¶§ ÈçÇϸç, ƯÈ÷ ¿µ¾Æ¿¡¼ °¡Àå ¸¹´Ù. ¾ÆÀÌÀÇ ºÎ¸ð´Â ¾ÆÀÌ°¡ Ư¡ÀûÀÎ Áõ»ó(±í°Å³ª Á¥Àº ±âħÀ» ÇÏ´Â °æ¿ì, õ¸íÀ½ÀÌ µé¸®´Â °æ¿ì, ±×··°Å¸²¼Ò¸®°¡ µé¸®´Â °æ¿ì, µî)ÀÌ ÀÖÀ» ¶§ º´¿ø¿¡ ¿Àµµ·Ï ÇÏ¿´´Ù.
¼Ò¾Æ°ú ÀÇ»çµéÀº ¸ðµç °ü·Ã ÀÖ´Â Áõ»ó°ú ÀÌÇÐÀû ¼Ò°ß, ºñÀεÎ/ÀÎÈĺÎÀ§¿¡¼ ¸éºÀÀ¸·Î ¾òÀº ¹ÙÀÌ·¯½º ¹è¾ç °á°úµéÀ» ¸ðµÎ ±â·ÏÇÏ¿´´Ù. ÇϺΠȣÈí±â °¨¿°ÀÌ ÀÖÀ» ¶§ õ¸íÀ½Àº 1¼¼, 2¼¼¿Í 3¼¼¿¡ °¢°¢ 32%, 17.3%, 12% ÀÖ¾ú°í, ¿øÀÎ ±ÕÀ¸·Î ¹àÇôÁø °æ¿ì´Â ¹è¾ç°Ë»ç³ª Á÷Á¢¸é¿ªÇü±¤¹ýÀ» ÀÌ¿ëÇؼ 66% ¿´´Ù.(Wright AL, Taussig LM, Ray CG, Harrison HR, Holberg CJ, the GHMA Pediatricians. The Tucson Children's Respiratory Study. II. Lower respiratory tract illness in the first year of life. Am J Epidemiol 1989;129:1232-46.)
¿øÀÎ ¹ÙÀÌ·¯½º°¡ ±Ô¸íµÈ ȯ¾ÆµéÀº ÀÓ»óÀûÀÎ ¸é¿¡¼ ¹è¾ç°Ë»ç À½¼ºÀΠȯ¾Æ, ¸é¿ª°Ë»ç À½¼ºÀΠȯ¾Æµé°ú Â÷ÀÌ°¡ ¾ø¾ú´Ù(Ray CG, Holberg CJ, Minnich LL, Shehab ZM, Wright AL, Taussig LM, The Group Health Medical Associates. Acute lower respiratory illnesses during the first three years of life: potential roles for various etiologic agents. Pediatr Infect Dis J 1993;12:10-4.).
¿¹»ó´ë·Î RSV °¡ °¡Àå ÈçÇß°í, ÆĶóÀÎÇ÷翣ÀÚ(parainfluenza) type 3°¡ ´ÙÀ½À¸·Î ¸¹¾Ò´Ù. ¿©·¯ Á¾·ùÀÇ ±ÕÀÌ °ËÃâµÈ °æ¿ìµµ 24%¿¡¼ ¹ß°ßµÇ¾ú´Ù.( Ray CG, Minnich LL, Holberg CJ, Shehab ZM, Wright AL, Barton LL, et al. Respiratory syncytial virus-associated lower respiratory illnesses: possible influence of other agents. Pediatr Infect Dis J 1993;12:15-9.)
¸î °¡Áö ÇൿÀû ȤÀº ȯ°æÀû ¿ä¼ÒµéÀÌ ÇϺÎÈ£Èí±â °¨¿°ÀÇ À§Çè¿äÀΰú ¿¬°üÀÌ ÀÖ¾ú´Ù;
¸ðÀ¯¼öÀ¯(Àû¾îµµ 1´Þ) °¡ »ýÈÄ 4°³¿ù ±îÁö ÇϺÎÈ£Èí±â °¨¿°À²¿¡¼ õ¸íÀ½ÀÌ Àû¾ú´Ù. ¿µ¾Æ ¼öÀ¯ ¹æ¹ý°ú RSV °¨¿°ÀÇ ´Ù¸¥ À§Çè¿äÀÎ(¹æÀ» °°ÀÌ ¾´´Ù, º¸È£ÀÚ ±³À°¼öÁØ, ¾ö¸¶ÀÇ RSV ÀûÀº ¼öÄ¡)°ú ¿¬°üÀÌ ÀÖ¾ú´Ù. ÀÌ·¯ÇÑ À§Çè¿äÀÎÀÌ ÀÖ´Â ±×·ì¿¡¼ ¸ðÀ¯¼öÀ¯ÀÇ RSV °¨¿° ¿¹¹æÈ¿°ú´Â ´õ¿í ºÐ¸íÇÏ¿´´Ù(Wright AL, Holberg CJ, Martinez FD, Morgan WJ, Taussig LM, Group Health Medical Associates. Breast feeding and lower respiratory tract illness in the first year of life. Br Med J 1989;299:946-9.)( Holberg CJ, Wright AL, Martinez FD, Ray CG, Taussig LM, Lebowitz MD. Risk factors for respiratory syncytial virus-associated lower respiratory illnesses in the first year of life. Am J Epidemiol 1991;133:1135-51.)
30»ì ÀÌ»óÀÇ ¾ö¸¶µéÀÇ ¾Æ±â¿¡ ºñÇØ ÀþÀº ¿©¼ºÀÇ ¾Æ±âµéÀº ÇϺÎÈ£Èí±â °¨¿°½Ã õ¸íÀ½ÀÌ ´õ ¸¹ÀÌ µé·È´Ù.( Martinez FD, Wright AL, Holberg CJ, Morgan WJ, Taussig LM. Maternal age as a risk factor for wheezing lower respiratory illnesses in the first year of life. Am J Epidemiol 1992;15;136:1258-68.)
¿¡¾îÄÁÀÌ ¼³Ä¡µÈ Áý¿¡ »ç´Â ¾ÆÀ̵éÀÌ Ãµ¸íÀ½ÀÌ ´õ ¸¹¾Ò°í(Aldous MB, Holberg CJ, Wright AL, Martinez FD, Taussig LM. Evaporative cooling and other home factors and lower respiratory tract illness during the first year of life: Group Health Medical Associates. Am J Epidemiol 1996;143:423-30.),
¾ö¸¶°¡ Èí¿¬ÇÏ´Â °æ¿ì õ¸íÀ½ÀÌ ÈξÀ ¸¹¾Ò°í, ³ªÀÌ°¡ ¾î¸±¼ö·Ï ¸¹¾Ò´Ù. Áý¾È¿¡ Èí¿¬ÇÏ´Â »ç¶÷ÀÌ Àִ°æ¿ì 2»ì ¶§ÀÇ Ãµ¸íÀ½ ¹ß»ý·üÀÌ ³ô¾Ò°í(Holberg CJ, Wright AL, Martinez FD, Morgan WJ, Taussig LM. Child day care, smoking by caregivers, and lower respiratory tract illness in the first 3 years of life. Pediatrics 1993;91:885-92.), ¼ºº°ÀÇ Â÷ÀÌ´Â ¾ø¾ú´Ù.
¿¹»ó¿¡ ¾î±ß³ °á°ú´Â õ¸íÀ½ÀÌ µé¸®Áö ¾Ê¾Ò´ø ÇϺÎÈ£Èí±â °¨¿°È¯ÀÚÀÇ ¸é¿ª±Û·ÎºÒ¸° E(IgE) »ý»ê°ú ¿¬°üÀÌ ÀÖ¾ú´Ù. ¾ÆÀ̵éÀº ÇϺÎÈ£Èí±â°¨¿°·Â¿¡ µû¶ó ¼¼°³ÀÇ ±×·ìÀ¸·Î ³ª´©¾ú´Ù.( Martinez FD, Stern DA, Wright AL, Taussig LM, Halonen M, GHMA Pediatricians. Association of non-wheezing lower respiratory tract illnesses in early life with persistently diminished serum IgE levels. Thorax 1995;50:1067-72.)
õ¸íÀ½ÀÌ ÀÖ¾ú´ø ÇϺÎÈ£Èí±â °¨¿°È¯ÀÚ, õ¸íÀ½ÀÌ ¾ø¾ú´ø ÇϺÎÈ£Èí±â °¨¿°È¯ÀÚ, õ¸íÀ½µµ ¾ø¾ú°í ÇϺÎÈ£Èí±â °¨¿°µµ ¾ø¾ú´ø ȯÀÚ·Î ³ª´©¾ú´Ù. À̵鿡¼ Ãâ»ýÃʱâ õ¸íÀ½ÀÌ ¾ø´Â ÇϺÎÈ£Èí±â °¨¿°È¯ÀÚ´Â IgE »ý¼ºÀÌ Ãµ¸íÀ½°ú È£Èí±â °¨¿°ÀÌ ¾ø¾ú´ø ¾ÆÀÌ¿Í Â÷ÀÌ°¡ ¾ø¾ú´Ù. ±×·¯³ª õ¸íÀ½ÀÌ ¾øÀÌ È£Èí±â °¨¿°ÀÌ ÀÖ´Â ¾ÆÀ̵éÀº 9°³¿ù°ú 6»ì ¶§ IgE°¡ Àû°Ô »ý»êµÇ¾ú´Ù. ´õ¿íÀÌ 9°³¿ù¿¡ õ¸íÀ½ÀÌ ¾øÀÌ È£Èí±â °¨¿°ÀÌ ÀÖ¾ú´ø ¾ÆÀÌ¿¡¼ ±âħÀ¸·Î Ç÷¾×äÃ븦 ÇÑ ÈÄ 6³â°¿¡ IgE ¼öÄ¡°¡ ¸¹ÀÌ ÁÙ¾îÀÖ¾ú´Ù. õ¸íÀ½ÀÌ ¾ø¾ú´ø ÇϺÎÈ£Èí±â °¨¿°È¯ÀÚ¿¡¼ IFN-r °ªÀÌ ³ôÀº °ÍÀ¸·Î º¸¾Æ ±×µéÀº T-cell ¹ÝÀÀÀ» ÇÒ ¼ö ÀÖ´Â ´É·ÂÀÌ Ãµ¸íÀ½ÀÌ ÀÖ¾ú´ø ȯÀڵ麸´Ù ¸ÕÀú ¹ß´ÞÇß´Ù°í ÇÒ ¼ö ÀÖ´Ù. ´Ù¸¥ ¸»·Î Çϸé Çе¿±â ÀüÈÄÀÇ IgE »ý¼ºÀÌ Ãµ¸íÀ½ÀÌ ¾ø´ø ÇϺÎÈ£Èí±â °¨¿°À¸·Î ÀÎÇØ º¯È¸¦ ¹Þ¾Ò´Ù°í ¿©°ÜÁø´Ù.
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